[Locate Breakpoints]Visual Fault Locator, be used to locate sharp bends & breaks in jacked or bare fiber. Locating the fault of fiber breakage, winding and so on. [WIDELY USED]2.5mm Universal Connector - the connector of the detector is compatibly designed for ST, SC, FC interferes both in circle and square shape of different fiber optic cables. [Identify Fibers]Red light cable equipment could also be used to identify the connectors in patch panels and identify the fibers during splicing operation. End-to-end fiber recognition. [Long Distance Detection]The 30mW visual fault locator has a strong light source output power, can output a strong red indicating light, up to 25-35 kilometers. Also has pulsed and CW operation. [Rugged Metal Design]Rugged and weatherproof design with a small bag. Material: plastic colour: black Package Contents: 4 x Tester (without battery 2 x AA batteries) 4 x Lanyard 4 x tote bag 4 x Adapter